Results 1 to 10 of about 1,219 (127)

Male Copulatory Structures in Reproductively Functional Female Live-Bearing Fish <i>Pseudopoecilia fria</i>. [PDF]

Ecol Evol
We recently discovered a population of the live‐bearing fish Pseudopoecilia fria (Cyprinodontiformes: Poeciliidae), in which females were found to possess gonopodia, reproductive organs normally exclusive to male fish that are used in the transfer of sperm in mating.
Yeager J, Avila L, Inman C, Cartee M, Pozo M, Burbano D.   +5 more
europepmc   +2 more sources

Precipitation Modulates the Impact of Human Activities on Riverine Food Webs Revealed by Environmental DNA. [PDF]

Ecol Evol
The effects of human activities on ecological networks are associated with climate, with increased precipitation weakening their negative impact. ABSTRACT The functionality of global rivers has been adversely affected by environmental pollution and habitat degradation.
Zhang S, Zhang X, Zhong W, Anna L, Zhang Y, Pellissier L.   +5 more
europepmc   +2 more sources

Description of Encephalon Morphology of Nile Tilapia Oreochromis niloticus (Linnaeus, 1758) (Perciformes: Cichlidae) From Brazil. [PDF]

Anat Histol Embryol
ABSTRACT The Nile tilapia (Oreochromis niloticus) is a cichlid species native to Africa and is widely farmed in tropical and subtropical regions around the world, making it one of the most commercially important aquaculture species. Despite its significance, there is still a lack of detailed anatomical descriptions of its brain.
Pereira ALS, Sartori E, Campos GM, Ferreira CD, Mendonça PP, Vergilio CDS.   +5 more
europepmc   +2 more sources

Alternative social and reproductive niches linked to intra-sexual color variation in a facultatively protogynous North American annual killifish, Millerichthys robustus [PDF]

Scientific Reports
Intra-sexual variation in coloration is often linked to comprehensive differences in reproductive behavior and life histories. Both males and females can express intrapopulation variation in coloration, and facultative hermaphrodism adds further ...
Omar Domínguez-Castanedo, Martin Reichard   +1 more
doaj   +2 more sources

De novo genome hybrid assembly and annotation of the endangered and euryhaline fish Aphanius iberus (Valenciennes, 1846) with identification of genes potentially involved in salinity adaptation [PDF]

BMC Genomics
Background The sequencing of non-model species has increased exponentially in recent years, largely due to the advent of novel sequencing technologies.
Alfonso López-Solano, Ignacio Doadrio, Tessa Lynn Nester, Silvia Perea   +3 more
doaj   +2 more sources

Genomes of the Orestias pupfish from the Andean Altiplano shed light on their evolutionary history and phylogenetic relationships within Cyprinodontiformes [PDF]

BMC Genomics
Background To unravel the evolutionary history of a complex group, a comprehensive reconstruction of its phylogenetic relationships is crucial. This requires meticulous taxon sampling and careful consideration of multiple characters to ensure a complete ...
Pamela Morales, Felipe Gajardo, Camilo Valdivieso, Moisés A. Valladares, Alex Di Genova, Ariel Orellana, Rodrigo A. Gutiérrez, Mauricio González, Martin Montecino, Alejandro Maass, Marco A. Méndez, Miguel L. Allende   +11 more
doaj   +2 more sources

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil. [PDF]

J Fish Biol
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Kampfert LEP, Maicrovicz JC, Blanco DR, Lange D, Pavanelli CS, Brandão H.   +5 more
europepmc   +2 more sources

Sexual Dimorphism in Fin Size and Shape in North American Killifish [PDF]

Ecology and Evolution
Sexual dimorphism is intriguing because it suggests that males and females differ in phenotypic optima for traits and that sex‐specific trait values can evolve despite a shared genome.
Elijah J. Davis, Kasey Brockelsby, Milton Tan, Rebecca C. Fuller   +3 more
doaj   +2 more sources

Complete mitochondrial genome of the Spanish toothcarp, Aphanius iberus (Valenciennes, 1846) (Actinopterygii, Aphaniidae) and its phylogenetic position within the Cyprinodontiformes order [PDF]

Molecular Biology Reports, 2023
Alfonso López-Solano, Ignacio Doadrio, Doadrio Ignacio   +2 more
exaly   +2 more sources

Cyprinodontiform fishes of El Salvador

Cuadernos de investigación UNED, 2021
Introduction: The Cyprinodontiformes are a group of secondary freshwater fishes widely distributed in El Salvador. Currently, many species of this group are usually incorrectly identified for lack of adequate tools.
Francisco S. Álvarez, Saúl González Murcia, Caleb D. McMahan, Wilfredo A. Matamoros   +3 more
doaj   +1 more source